Is it also the owner of our community for foreigners to spend 10,000 to 20,000 yuan to buy a residential mezzanine? Can the sales office sell the building like this?

If there is a formal title certificate, of course, it is the owner, and naturally there is a property fee. However, if the nature of the house is changed, it will affect the normal life of the original owners. At the same time, there will be many unsafe factors. Should be reflected to the urban management and other relevant departments to solve. Let's see if there are any relevant policies in the property law.